Facile synthesis and gas sensing properties of hollow urchin-like SnO_2 nanospheres synthesized by template-free hydrothermal route

摘要

Hollow urchin-like SnO2 nanospheres with tetragonal rutile structure were synthesized by a template-free hydrothermal route. The as-prepared products demonstrated a novel hollow urchin-like SnO2 nanosphere with the diameter of around 500 nm. It exhibited a high response and selectivity toward ethylene glycol at a lower heating voltage. The excellent ethylene glycol response was attributed to the hollow structure, the nanorods building blocks and the unique architecture structure. (C) 2019 Elsevier B.V. All rights reserved.